%0 Journal Article
%A Saleev, A.
%A Nikolaev, N. N.
%A Rathmann, F.
%A Hinder, F.
%A Pretz, J.
%A Rosenthal, M.
%T Non-exponential decoherence of radio-frequency resonance rotation of spin in storage rings
%J JETP letters
%V 106
%N 4
%@ 1090-6487
%C Heidelberg [u.a.]
%I Springer
%M FZJ-2017-07903
%P 213 - 216
%D 2017
%X Precision experiments, such as the search for electric dipole moments of charged particles using radio-frequency spin rotators in storage rings, demand for maintaining the exact spin resonance condition for several thousand seconds. Synchrotron oscillations in the stored beam modulate the spin tune of off-central particles, moving it off the perfect resonance condition set for central particles on the reference orbit. Here, we report an analytic description of how synchrotron oscillations lead to non-exponential decoherence of the radio-frequency resonance driven up–down spin rotations. This non-exponential decoherence is shown to be accompanied by a nontrivial walk of the spin phase. We also comment on sensitivity of the decoherence rate to the harmonics of the radio-frequency spin rotator and a possibility to check predictions of decoherence-free magic energies.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000413418400002
%R 10.1134/S0021364017160044
%U https://juser.fz-juelich.de/record/840366